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Title: Dose reduction improvements in storage basins of spent nuclear fuel

Abstract

Spent nuclear fuel in storage basins at the Hanford Site has corroded and contaminated basin water, which has leaked into the soil; the fuel also had deposited a layer of radioactive sludge on basin floors. The SNF is to be removed from the basins to protect the nearby Columbia River. Because the radiation level is high, measures have been taken to reduce the background dose rate to as low as reasonably achievable (ALARA) to prevent radiation doses from becoming the limiting factor for removal of the SW in the basins to long-term dry storage. All activities of the SNF Project require application of ALARA principles for the workers. On the basis of these principles dose reduction improvements have been made by first identifying radiological sources. Principal radiological sources in the basin are basin walls, basin water, recirculation piping and equipment. Dose reduction activities focus on cleaning and coating basin walls to permit raising the water level, hydrolasing piping, and placing lead plates. In addition, the transfer bay floor will be refinished to make decontamination easier and reduce worker exposures in the radiation field. The background dose rates in the basin will be estimated before each task commences and after itmore » is completed; these dose reduction data will provide the basis for cost benefit analysis.« less

Authors:
Publication Date:
Sponsoring Org.:
USDOE Office of Environmental Restoration and Waste Management, Washington, DC (US)
OSTI Identifier:
16943
Report Number(s):
HNF-SA-3158-FP; ON: DE99050157; BR: EW7040000
ON: DE99050157; BR: EW7040000; TRN: US0111122
DOE Contract Number:
AC06-96RL13200
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 13 Aug 1997; Supercedes report DE99050157; PBD: 13 Aug 1997
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; COLUMBIA RIVER; COST BENEFIT ANALYSIS; DECONTAMINATION; DOSE RATES; DRY STORAGE; SPENT FUELS; RADIATION DOSES; FUEL STORAGE POOLS; HANFORD RESERVATION; SLUDGES; RADIATION PROTECTION

Citation Formats

Huang, Fan-Hsiung F. Dose reduction improvements in storage basins of spent nuclear fuel. United States: N. p., 1997. Web. doi:10.2172/16943.
Huang, Fan-Hsiung F. Dose reduction improvements in storage basins of spent nuclear fuel. United States. doi:10.2172/16943.
Huang, Fan-Hsiung F. Wed . "Dose reduction improvements in storage basins of spent nuclear fuel". United States. doi:10.2172/16943. https://www.osti.gov/servlets/purl/16943.
@article{osti_16943,
title = {Dose reduction improvements in storage basins of spent nuclear fuel},
author = {Huang, Fan-Hsiung F.},
abstractNote = {Spent nuclear fuel in storage basins at the Hanford Site has corroded and contaminated basin water, which has leaked into the soil; the fuel also had deposited a layer of radioactive sludge on basin floors. The SNF is to be removed from the basins to protect the nearby Columbia River. Because the radiation level is high, measures have been taken to reduce the background dose rate to as low as reasonably achievable (ALARA) to prevent radiation doses from becoming the limiting factor for removal of the SW in the basins to long-term dry storage. All activities of the SNF Project require application of ALARA principles for the workers. On the basis of these principles dose reduction improvements have been made by first identifying radiological sources. Principal radiological sources in the basin are basin walls, basin water, recirculation piping and equipment. Dose reduction activities focus on cleaning and coating basin walls to permit raising the water level, hydrolasing piping, and placing lead plates. In addition, the transfer bay floor will be refinished to make decontamination easier and reduce worker exposures in the radiation field. The background dose rates in the basin will be estimated before each task commences and after it is completed; these dose reduction data will provide the basis for cost benefit analysis.},
doi = {10.2172/16943},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 13 00:00:00 EDT 1997},
month = {Wed Aug 13 00:00:00 EDT 1997}
}

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